Q37. The correct nomenclature for the following compound is :\\
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(1) 2-formyl-4-hydroxyhept-7-enoic acid\\
(2) 2-formyl-4-hydroxyhept-6-enoic acid\\
(3) 2-carboxy-4-hydroxyhept-7-enal\\
(4) 2-carboxy-4-hydroxyhept-6-enal